diff --git a/pkgs/development/lisp-modules/quicklisp-to-nix-overrides.nix b/pkgs/development/lisp-modules/quicklisp-to-nix-overrides.nix
index a760e0cb6842..478252eb76cd 100644
--- a/pkgs/development/lisp-modules/quicklisp-to-nix-overrides.nix
+++ b/pkgs/development/lisp-modules/quicklisp-to-nix-overrides.nix
@@ -54,6 +54,25 @@ in
       sha256 = "0pa86bf3jrysnmhasbc0lm6cid9xzril4jsg02g3gziav1xw5x2m";
     };
   };
+  iolib_slash_syscalls = x: rec {
+    propagatedBuildInputs = (x.propagatedBuildInputs or [])
+     ++ (with pkgs; [libfixposix gcc])
+     ++ (with qlnp; [
+       alexandria split-sequence cffi bordeaux-threads idna swap-bytes
+     ])
+     ;
+    testSystems = ["iolib" "iolib/syscalls" "iolib/multiplex" "iolib/streams"
+      "iolib/zstreams" "iolib/sockets" "iolib/trivial-sockets"
+      "iolib/pathnames" "iolib/os"];
+
+    version = "0.8.3";
+    src = pkgs.fetchFromGitHub {
+      owner = "sionescu";
+      repo = "iolib";
+      rev = "v${version}";
+      sha256 = "0pa86bf3jrysnmhasbc0lm6cid9xzril4jsg02g3gziav1xw5x2m";
+    };
+  };
   cl-unicode = addDeps (with qlnp; [cl-ppcre flexi-streams]);
   clack =  addDeps (with qlnp;[lack bordeaux-threads prove]);
   clack-v1-compat =  addDeps (with qlnp;[